oj.uz

Submission #740220

# Submission time Handle Problem Language Result Execution time Memory
740220 2023-05-12T07:26:51 Z Mauve Palembang Bridges (APIO15_bridge) C++14
100 / 100
 411 ms 16748 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ss second
#define ff first
#define INF 2000000000000000
#define pb push_back
ll n,m,l,r,i,j,ii,jj,k,x,y,T,s,e,a[100005],b[100005],dist1,dist2,ans,sz1,sz2;
char ch1,ch2;
vector< pair<ll,ll> > v;
vector<ll> sub;
multiset<ll> l1,l2,r1,r2;
multiset<ll>::iterator it;
void nem(ll num){
    ll med=*(--l1.end()),new_med=med;
    if(num>med) r1.insert(num);
    else l1.insert(num);
    if(l1.size()>(sz1+1)/2){
        it=(--l1.end());
        l1.erase(it);
        r1.insert(*it);
        new_med=*(--l1.end());
        dist1+=((sz1-1)/2+1)*(med-new_med)-(sz1/2-1)*(med-new_med);
    }
    if(r1.size()>sz1/2){
        it=(r1.begin());
        r1.erase(it);
        l1.insert(*it);
        new_med=*it;
        dist1+=(sz1/2)*(new_med-med)-((sz1-1)/2)*(new_med-med);
    }
    dist1+=abs(num-new_med);
}
void has(ll num){
    ll med=*(--l2.end()),new_med;
    if(num>med){
       it=r2.find(num); 
       r2.erase(it); 
    }
    else{
        it=l2.find(num);
        l2.erase(it);
    }
    dist2-=(abs(num-med));
    if(l2.size()>(sz2+1)/2){
        it=(--l2.end());
        l2.erase(it);
        r2.insert(*it);
        new_med=*(--l2.end());
        dist2+=((sz2+1)/2)*(med-new_med)-((sz2+2)/2-1)*(med-new_med);
    }
    if(r2.size()>sz2/2){
        it=(r2.begin());
        r2.erase(it);
        l2.insert(*it);
        new_med=*it;
        dist2+=((sz2+2)/2-1)*(new_med-med)-((sz2+1)/2)*(new_med-med);
    }
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin>>T>>n;
    for(i=1;i<=n;i++){
        cin>>ch1>>l>>ch2>>r;
        if(ch1==ch2) k+=abs(l-r);
        else{
            k++;
            v.pb({l+r,i});
            sub.pb(l);
            sub.pb(r);
        }
        a[i]=l;
        b[i]=r;
    }
    if(T==1){
        sort(sub.begin(),sub.end());
        for(i=0;i<sub.size();i++) k+=abs(sub[i]-sub[sub.size()/2]);
        cout<<k;
        return 0;
    }
    sort(v.begin(),v.end());
    n=v.size();
    if(n==0){
        cout<<k;
        return 0;
    }
    if(n==1){
        cout<<k+abs(a[v[0].ss]-b[v[0].ss]);
        return 0;
    }
    l1.insert(min(a[v[0].ss],b[v[0].ss]));
    r1.insert(max(a[v[0].ss],b[v[0].ss]));
    dist1=abs(a[v[0].ss]-b[v[0].ss]);
      
    for(i=1;i<n;i++){
        r2.insert(a[v[i].ss]);
        r2.insert(b[v[i].ss]);
    }
    for(i=1;i<n;i++){
        it=r2.begin();
        l2.insert(*it);
        r2.erase(it);
    }
    it=l2.end();
    it--;
    x=*it;
    for(i=1;i<n;i++) dist2+=abs(a[v[i].ss]-x)+abs(b[v[i].ss]-x);
    ans=dist2+dist1;
    sz1=2;
    sz2=2*(n-1);
    for(i=1;i<n-1;i++){
        sz1++;
        nem(a[v[i].ss]);
        sz1++;
        nem(b[v[i].ss]);
        sz2--;
        has(a[v[i].ss]);
        sz2--;
        has(b[v[i].ss]);
        ans=min(ans,dist1+dist2);
    }
    cout<<ans+k;
}

Compilation message

bridge.cpp: In function 'void nem(long long int)':
bridge.cpp:18:17: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   18 |     if(l1.size()>(sz1+1)/2){
      |        ~~~~~~~~~^~~~~~~~~~
bridge.cpp:25:17: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   25 |     if(r1.size()>sz1/2){
      |        ~~~~~~~~~^~~~~~
bridge.cpp: In function 'void has(long long int)':
bridge.cpp:45:17: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   45 |     if(l2.size()>(sz2+1)/2){
      |        ~~~~~~~~~^~~~~~~~~~
bridge.cpp:52:17: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   52 |     if(r2.size()>sz2/2){
      |        ~~~~~~~~~^~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:79:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |         for(i=0;i<sub.size();i++) k+=abs(sub[i]-sub[sub.size()/2]);
      |                 ~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 32 ms 5176 KB Output is correct
13 Correct 43 ms 5288 KB Output is correct
14 Correct 30 ms 4668 KB Output is correct
15 Correct 31 ms 3264 KB Output is correct
16 Correct 32 ms 5188 KB Output is correct
17 Correct 30 ms 5196 KB Output is correct
18 Correct 36 ms 5228 KB Output is correct
19 Correct 42 ms 5168 KB Output is correct
20 Correct 33 ms 5176 KB Output is correct
21 Correct 41 ms 5236 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 3 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 472 KB Output is correct
20 Correct 2 ms 496 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 172 ms 15320 KB Output is correct
26 Correct 266 ms 15376 KB Output is correct
27 Correct 411 ms 16156 KB Output is correct
28 Correct 407 ms 16748 KB Output is correct
29 Correct 400 ms 16660 KB Output is correct
30 Correct 133 ms 8884 KB Output is correct
31 Correct 166 ms 16080 KB Output is correct
32 Correct 176 ms 16636 KB Output is correct
33 Correct 172 ms 16432 KB Output is correct
34 Correct 191 ms 16612 KB Output is correct
35 Correct 184 ms 16300 KB Output is correct
36 Correct 179 ms 16576 KB Output is correct
37 Correct 168 ms 15192 KB Output is correct